I am at a loss, I have a very important thing to do midday tomorrow and if I sleep at all I will likely be not anywhere nearly as clear in the head (brain fog) as if I stay awake and just not sleep at all. This is not going to be good for the rest of me though, tired muscles etc. Does this happen to anybody else? If they sleep even 3-4 hrs later, be having difficulty but later in the day--early evening, they finally start to wake up and get more energy?